SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ba74192b997c56066b354da41f743f2300e8efcf7e0bf412e94535b129dd9279' 
  AND token = 'QIE8UlJbH/aFEWU+UAD6j5BWnyG8U4+Jnzuqsp/mxVs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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