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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0afc93d56f8f510ac10538944406fac0c91ed46feabcb03f572ad17e08277bdb' 
  AND token = 'XP9AJa5EXq2+avzfiSLK4eI1XCSYQ2POUnafPw6S5as=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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