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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '81a2238bf81c4fdd4a257b34c461e37546380af0948f1c1fc449c737e5c34e19' 
  AND token = 'Ywa/SvDStc/fS/fpBIkEvNuZGl7eXQsfCyx7u9+paiY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00116

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}