SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70518362ca14f534bb4a8f17aa759f4e52aeec5e254a9b2009fe8e3a3bd93ec1' 
  AND token = 'wxC1tXkxQZdidt8biV6k+1/ReqvDGhFZPw2+CgOBAFg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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