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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e79ee580d6c8981ae5237041040f8d712512a4e00513635cd2428ccc580e575' 
  AND token = 'V/DmpCZa5Gy/prLm4doPZXGx0vTupup8NWFua6pa7/o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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