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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1e25f43032a9e4714f0946e72d865349c4bfc9c6765c2fa9b1e2947b94b2908f' 
  AND token = 'Y/dUi36yyS/4GKNv3AOwMohWF2z1tUp9e/FgKrn4JfU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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