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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '00e32a6cca95380885ee4c0d0dffa13dfe43eb0afd5d41f22243b4a3cedcf13f' 
  AND token = 'ysCTQs+Tb6I4kHzbKwaM+I2njvVW2yqnrsOON102a5o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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