Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '86ef65d2c6f00650353949d287df08c8a597b04d53bac8fed161af4916db8efd' 
  AND token = 'DpVAxs1RpH3oO4NVobqvh0Efzezk5txR2lfznMAN3q8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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