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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c7884b2d589f73ea27d91a45ebcfe6278413c6a3fbbea556b9083118bfbd0be2' 
  AND token = 'Rd7J5bAO79sF/v4J9TefpdeeA5KsWJlCHFtbsYvQM3E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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