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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '74a2c621f9f3356700033b6bb2a769ac3ea8ef7510c9c31232b6f3da2236169c' 
  AND token = 'AdSaI8iF1z+tISbr3EK/ber4JZq8Nokamgj/43vgQoU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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