Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c5d2a2a9504e64339f5de68313ac26557132fdec4dce59262ea04c77840ec914' 
  AND token = 'JAVvP55+bIuIbfaFRl6a46Lyy4SeZfVaeOSCINQcyW8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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