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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1a07e8d1be7ad90f04963a320f5781c0802bdb0312ad299d4245a89257cf3ad0' 
  AND token = 'Q4J4BxUH49CNDRb8JxGv392l58UCrm9ViPpYx7HH8eM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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