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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22fa6535f66a918b8521d76145baa35f14fc18747eb8e3ba73b2d217aa8e8ab0' 
  AND token = '8prG/QNPsqWsQd/RCC4NxbEoKR1z8PyhhxlQ6KFlMng=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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