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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3b207a264b04e95b181e14d521214b364f668544ba13b439dba2462e9a243b22' 
  AND token = 'xBdJ7Dk9b5f2CQYNaWohjtW2tQ+dbXaLMkSPryyAA84=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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