SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9e9a795e4da81729028755f4c9f7f9588bb34a6413c08b4dad5a17063b7b93af' 
  AND token = '9Cg/m8Zs7Sy/JGGG40yGJLsqo91r8vEKy5z3BloHiUc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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