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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '71c62b4b6afe31f815271ceeb9249ced0732ea46826274c8a02500abd42cbfbb' 
  AND token = 'nfFL0uG9kg+BIb5iH2D34GCERuiXDObP/+0116QJ5uE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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