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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bbe45625d7cc95bc85146108878cc88e113f715c97dfe3316b8a7bbb576d4290' 
  AND token = 'nfNEf3CYQvGKOxvkh1gNVBs4P22UiORiEOuSFNOe3LM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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