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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '702149d0a9bdf2309608c70e2d1fe50e3ec93481785e72b2088483240f29c045' 
  AND token = 'pejcNFyHwvy0W/SIaS59GqjLh52ZP1uFE1WPEyCx5g8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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