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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbbfad2c30bc70f72061cd5742a65584d77c9e0c69f5f3703f79dde7e9baf19c' 
  AND token = 'q1HX3xQzrJUSxifPkV3SLdFocV9zQN2s8m5Nae8ETiU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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