Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '93e22ec723468ba976edf231aa8e03af99f730df88afebaacff5c33d9bd8d20e' 
  AND token = 'GkOac5Ja9sBRm+dVqthZt/i6PFEAcl0F0pN7z2BeFng=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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