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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0af1c2bc2f192c5046fd4b3ba8ff7cb2fbc06f0c8a14c239f7a4ff73287f8c59' 
  AND token = '0et02VoORBjGMdqUR5OsuosYrvudayigd52XkZkj/fA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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