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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '86c37260316da0a065b788698db10a5da924a1dc232d8da74b46226cbe491eec' 
  AND token = 'akCeAgrwYIAnm0G+5YkC47jPOjXFD0g6FMrufzFF/fo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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