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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9cb7e8ec61e2c7c2b877554ccc86806bf9b6091b373e0975b19394867fc5e260' 
  AND token = '7S3/OyWdf3fJ5aC3BR+cBbVFTkLaQ60W3sxfKHXNeu0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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