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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1461b861d41b940bbe8e67167373287537d43d8b012928041cd238e48850a76a' 
  AND token = 'RZ44G25pquf+9iGljrvEF1twPbeZ6Sxir139AJbGXbU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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