Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e44bc2963d1341afc466e0b82911c0a126152da8f23a3fba15f20f70b45103f4' 
  AND token = 'R+MaE0Ja/a9/pF79KDcYFQB9y6PJOhIRO9eMUsZdWE4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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