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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01e9fcc611ed8a14234202297bfdc0865e7ecea99d98267ed03e496af7557f9e' 
  AND token = 'RdHffkGyX+aUupf7r2JHnjrO9t+mQeJS0GeJqk4m1OQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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