Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1dd0690f88d4dd8d1a934a1aa00386bf22cddc7726bd32e53aa3762f71e372cb' 
  AND token = 'SRUhzoK/1xcXvPA3GyMWQZ4mi/qddveAqteCXes6zBo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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