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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22fa43ba194ff0284506214deef277326545cae26a7316fa3a8806d8617b516e' 
  AND token = 'z9Q2RDu9FA0RSemfnSdHA3wilLTfJ9NyDh/JSbI72b0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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