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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '08d7a9e5ee054772303546b91774ef966e76e2a49939184fba63d42ab5e2c0c6' 
  AND token = 'LSGYcOcu5cYswHa3tt8V8T7Po4u7sEEbbvR8gji6uMw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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