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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73434d2e3e64c357f13c355d4b376a8432a134fd2bfb7bc625a966c2d9f3cd3a' 
  AND token = 'veToXvamXkDcAWaYI4Gjw5KwGwy4tUDJuUHF9Jy87l4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00130

JSON explain

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